wxPython/demo/wxTreeCtrl.py

   1
   2 from wxPython.wx import *
   3
   4 import string
   5
   6 #---------------------------------------------------------------------------
   7
   8 class MyTreeCtrl(wxTreeCtrl):
   9     def __init__(self, parent, id, pos, size, style, log):
  10         wxTreeCtrl.__init__(self, parent, id, pos, size, style)
  11         self.log = log
  12
  13     def OnCompareItems(self, item1, item2):
  14         t1 = self.GetItemText(item1)
  15         t2 = self.GetItemText(item2)
  16         self.log.WriteText('compare: ' + t1 + ' <> ' + t2 + '\n')
  17         if t1 < t2: return -1
  18         if t1 == t2: return 0
  19         return 1
  20
  21 #---------------------------------------------------------------------------
  22
  23 class TestTreeCtrlPanel(wxPanel):
  24     def __init__(self, parent, log):
  25         # Use the WANTS_CHARS style so the panel doesn't eat the Return key.
  26         wxPanel.__init__(self, parent, -1, style=wxWANTS_CHARS)
  27         EVT_SIZE(self, self.OnSize)
  28
  29         self.log = log
  30         tID = NewId()
  31
  32         self.tree = MyTreeCtrl(self, tID, wxDefaultPosition, wxDefaultSize,
  33                                wxTR_HAS_BUTTONS | wxTR_EDIT_LABELS# | wxTR_MULTIPLE
  34                                #| wxTR_HIDE_ROOT
  35                                , self.log)
  36
  37
  38         ##import images
  39         ##il = wxImageList(16, 16)
  40         ##idx1 = il.Add(images.getSmilesBitmap())
  41         ##idx2 = il.Add(images.getOpenBitmap())
  42         ##idx3 = il.Add(images.getNewBitmap())
  43         ##idx4 = il.Add(images.getCopyBitmap())
  44         ##idx5 = il.Add(images.getPasteBitmap())
  45
  46         ##self.tree.SetImageList(il)
  47         ##self.il = il
  48
  49         # NOTE:  For some reason tree items have to have a data object in
  50         #        order to be sorted.  Since our compare just uses the labels
  51         #        we don't need any real data, so we'll just use None.
  52
  53         self.root = self.tree.AddRoot("The Root Item")
  54         self.tree.SetPyData(self.root, None)
  55         ##self.tree.SetItemImage(self.root, idx1)
  56
  57         for x in range(15):
  58             child = self.tree.AppendItem(self.root, "Item %d" % x)
  59             self.tree.SetPyData(child, None)
  60             ##self.tree.SetItemImage(child, idx2, wxTreeItemIcon_Expanded)
  61             ##self.tree.SetItemSelectedImage(child, idx3)
  62             for y in range(5):
  63                 last = self.tree.AppendItem(child, "item %d-%s" % (x, chr(ord("a")+y)))
  64                 self.tree.SetPyData(last, None)
  65                 ##self.tree.SetItemImage(last, idx4)
  66                 ##self.tree.SetItemSelectedImage(last, idx5)
  67                 for z in range(5):
  68                     item = self.tree.AppendItem(last,  "item %d-%s-%d" % (x, chr(ord("a")+y), z))
  69                     self.tree.SetPyData(item, None)
  70
  71         self.tree.Expand(self.root)
  72         EVT_TREE_ITEM_EXPANDED  (self, tID, self.OnItemExpanded)
  73         EVT_TREE_ITEM_COLLAPSED (self, tID, self.OnItemCollapsed)
  74         EVT_TREE_SEL_CHANGED    (self, tID, self.OnSelChanged)
  75         EVT_TREE_BEGIN_LABEL_EDIT(self, tID, self.OnBeginEdit)
  76         EVT_TREE_END_LABEL_EDIT (self, tID, self.OnEndEdit)
  77         EVT_TREE_ITEM_ACTIVATED (self, tID, self.OnActivate)
  78
  79         EVT_LEFT_DCLICK(self.tree, self.OnLeftDClick)
  80         EVT_RIGHT_DOWN(self.tree, self.OnRightClick)
  81         EVT_RIGHT_UP(self.tree, self.OnRightUp)
  82
  83
  84
  85     def OnRightClick(self, event):
  86         pt = event.GetPosition();
  87         item, flags = self.tree.HitTest(pt)
  88         self.log.WriteText("OnRightClick: %s, %s, %s\n" %
  89                            (self.tree.GetItemText(item), type(item), item.__class__))
  90         self.tree.SelectItem(item)
  91
  92
  93     def OnRightUp(self, event):
  94         pt = event.GetPosition();
  95         item, flags = self.tree.HitTest(pt)
  96         self.log.WriteText("OnRightUp: %s (manually starting label edit)\n"
  97                            % self.tree.GetItemText(item))
  98         self.tree.EditLabel(item)
  99
 100
 101
 102     def OnBeginEdit(self, event):
 103         self.log.WriteText("OnBeginEdit\n")
 104         # show how to prevent edit...
 105         if self.tree.GetItemText(event.GetItem()) == "The Root Item":
 106             wxBell()
 107             self.log.WriteText("You can't edit this one...\n")
 108             event.Veto()
 109
 110     def OnEndEdit(self, event):
 111         self.log.WriteText("OnEndEdit\n")
 112         # show how to reject edit, we'll not allow any digits
 113         for x in event.GetLabel():
 114             if x in string.digits:
 115                 self.log.WriteText("You can't enter digits...\n")
 116                 event.Veto()
 117                 return
 118
 119
 120     def OnLeftDClick(self, event):
 121         pt = event.GetPosition();
 122         item, flags = self.tree.HitTest(pt)
 123         self.log.WriteText("OnLeftDClick: %s\n" % self.tree.GetItemText(item))
 124         parent = self.tree.GetItemParent(item)
 125         self.tree.SortChildren(parent)
 126         event.Skip()
 127
 128
 129     def OnSize(self, event):
 130         w,h = self.GetClientSizeTuple()
 131         self.tree.SetDimensions(0, 0, w, h)
 132
 133
 134     def OnItemExpanded(self, event):
 135         item = event.GetItem()
 136         self.log.WriteText("OnItemExpanded: %s\n" % self.tree.GetItemText(item))
 137
 138     def OnItemCollapsed(self, event):
 139         item = event.GetItem()
 140         self.log.WriteText("OnItemCollapsed: %s\n" % self.tree.GetItemText(item))
 141
 142     def OnSelChanged(self, event):
 143         self.item = event.GetItem()
 144         self.log.WriteText("OnSelChanged: %s\n" % self.tree.GetItemText(self.item))
 145         if wxPlatform == '__WXMSW__':
 146             self.log.WriteText("BoundingRect: %s\n" %
 147                                self.tree.GetBoundingRect(self.item, true))
 148         #items = self.tree.GetSelections()
 149         #print map(self.tree.GetItemText, items)
 150         event.Skip()
 151
 152
 153     def OnActivate(self, evt):
 154         self.log.WriteText("OnActivate: %s\n" % self.tree.GetItemText(self.item))
 155
 156
 157 #---------------------------------------------------------------------------
 158
 159 def runTest(frame, nb, log):
 160     win = TestTreeCtrlPanel(nb, log)
 161     return win
 162
 163 #---------------------------------------------------------------------------
 164
 165
 166
 167
 168
 169 overview = """\
 170 A tree control presents information as a hierarchy, with items that may be expanded to show further items. Items in a tree control are referenced by wxTreeItemId handles.
 171
 172 """
 173
 174
 175
 176 if __name__ == '__main__':
 177     import sys,os
 178     import run
 179     run.main(['', os.path.basename(sys.argv[0])])
 180